Non-permanent-magnet DC Brushed Motor 80mm Diameter for Industrial Pump with slot Type Commutator- Suzhou Retek Electric Technology Co., Ltd.

The Non-Permanent Magnet (Wound Field) DC Brushed Motor

The Non-Permanent Magnet DC Brushed Motor (also known as a Wound Field DC Motor - series, shunt, or compound) uses electromagnets in the stator (field windings) instead of permanent magnets.

The 80mm version for industrial pumps typically utilizes a Series or Compound wound configuration to achieve high starting torque and moderate speed regulation. The absence of permanent magnets makes this motor less susceptible to demagnetization from high currents or thermal extremes. This robustness, combined with the ability to operate at higher transient currents, makes it ideal for challenging loads like positive displacement pumps where high starting torque is essential.

Introduction

Detailed Parameters and Performance Data

RETEK: Rugged Power for Challenging Pump Loads

Suzhou Retek Electric Technology Co., Ltd. specializes in wound field motors for heavy-duty industrial applications, such as large industrial pumps, where reliability under frequent start-stop cycles and high static pressure is critical. The non-permanent-magnet design provides an inherent robustness against demagnetization, ensuring the motor remains consistent throughout its service life. We custom-engineer the field and armature windings to optimize the speed-torque curve for the specific head pressure and flow rate requirements of industrial pumps.

Applications

Advanced Technology Highlights

Industrial Pump and Heavy Actuation Applications

Industrial Positive Displacement Pumps: Motors for gear pumps, piston pumps, and high-pressure washing systems where high starting torque is required to overcome system pressure. Challenge: High transient current during startup.
Material Processing Equipment: Mixers, extruders, and conveyors requiring extremely high torque at low speeds.
Heavy-Duty Actuators: Actuators requiring predictable, high-force output across a wide temperature range.
Specialty Automotive: High-power auxiliary drives and specialized vehicle winches.

Technical Specifications

Industrial & Commercial Usage

Technical Parameters (Non-PM DC Motor)

Parameter	Range / Typical Value	Unit
Outer Diameter	80	mm
Field Type	Wound (Series/Compound)	Configuration
Nominal Voltage	24 to 180	VDC
Starting Torque	Very High (Series Wound)	Factor
Thermal Class	Class F or H	Rating
Motor Regulation	Load Dependent	Characteristic

Additional Information

Supplementary Details & Notes

Integrated Production and Customization Workflow

Our production includes precise calibration of the brush neutral plane and field winding to ensure optimal commutation and maximum torque output. Each unit is tested on a dynamometer simulating the specified pump load curve.

Winding Customization: Offering specific Series, Shunt, or Compound winding configurations to tailor the speed regulation and starting torque characteristics for the pump type (e.g., high shunt field for improved speed stability).
Shaft Sealing: Custom output shaft designs with integrated oil or pressure seals (e.g., lip seals, mechanical seals) for direct pump coupling, preventing fluid ingress.
Protection Rating: Providing IP55 or higher protection ratings, essential for motors operating near splashing fluids or high humidity.
Brush Holder Design: Integrating durable, externally accessible brush holders for easy monitoring and replacement in 24/7 industrial pump applications.

Service & Support

Technical Advantages and Core Design Features

Inherently Robust: Not susceptible to demagnetization from high peak currents or external magnetic fields, providing superior resilience in heavy industrial settings.
Exceptional Starting Torque: Series wound variants provide maximum starting torque, proportional to the square of the armature current, ideal for overcoming high static loads in pumps.
Higher Peak Current Handling: The field windings, being made of copper, can temporarily handle much higher currents than permanent magnets, offering greater short-term overload capacity.
Reliable Commutator: Slot Type Commutator provides a large contact surface for reliable current transfer under heavy load.
Temperature Resilience: Performs reliably across a broader temperature range as magnet performance is not a factor.

Frequently Asked Questions

Common Inquiries Regarding Non-PM DC Motors

Q: What is the main drawback of a Series Wound configuration for an industrial pump?
A: Series wound motors have very poor speed regulation; the speed is highly dependent on the load. If the load is accidentally removed (e.g., pump runs dry), the motor can reach dangerously high speeds (runaway). Control systems must include overspeed protection.

Q: Are these motors suitable for operation with variable speed drives?
A: Yes. While they are simply controlled by voltage, they can be used with modern digital DC motor controllers that provide current limiting and soft-start capabilities, managing the high starting torque and providing overload protection.

Q: How does the construction of this motor differ from a standard BLDC motor?
A: BLDC motors use electronic commutation via a driver, have no brushes or commutator, and use permanent magnets. This motor uses mechanical commutation (brushes/commutator) and uses field windings instead of permanent magnets, simplifying the motor's power input (just DC voltage).

Resources

Advanced Material Selection Guide

Field and Armature Windings: Utilize high-temperature (Class F or H) copper wire to ensure the motor can withstand the heat generated by large continuous currents. Heavy VPI treatment is mandatory.

Bearings: Use rugged, heavy-duty ball bearings specified for high thrust loads, common when the motor is coupled directly to a centrifugal or positive displacement pump.

Housing: Robust cast iron or heavy-gauge steel housing for maximum rigidity and resistance to external impacts in industrial settings.

About Suzhou Retek Electric Technology Co., Ltd.

Unlike other motor suppliers, Retek engineering system prevents the selling of our motors and components by catalogue as every model is customized for our customers. The customers are assured that every component they receive from Retek is designed with their exact specifications in mind. Our total solutions are a combination of our innovation and a close working partnership with our customers and suppliers.

As China Non-permanent-magnet DC Brushed Motor 80mm Diameter for Industrial Pump with slot Type Commutator Manufacturers and Wholesale Non-permanent-magnet DC Brushed Motor 80mm Diameter for Industrial Pump with slot Type Commutator OEM/ODM Suppliers, Retek business consists of three platforms: Motors, Die-Casting and CNC manufacturing and wire harness. Retek products are widely supplied for residential fans, vents, boats, airplanes, medical facilities, laboratory facilities, trucks and other automotive machines.

Welcome to send us an RFQ, it is believed you will get the best cost-effective products and services here!

Customized Solutions

Quality Assurance

Global Export

Suzhou Retek Electric Technology Co., Ltd.

Recommended LINS

Permanent Magnet Dc Shunt Brush Motor 78mm Diameter with Slot Type Commutator BL80 series 80mm Diameter Brushless Dc Motor High Voltage DC Brushed Motor 90V 180V Worm Geared Brushed Dc Motor 40mm DC Worm Geared Motor Planetary Geared Brushed Dc Motor 52ZYT 52mm DC Geared Motor BL57 57mm Diameter Brushless DC Motor Planetary Geared Brushed Dc Motor 40ZYT 40mm DC Geared Motor 40ZYT 40mm brushed dc motor skewed slots feature durable design with reinforced bonding

Message Feedback